Nasty knocks and rattles would probably require prompt attention, burning a bit of oil won't hurt anything, and its only 4 months til winter!, as bikers we get a bit overly concerned about our engines, I mean if we buy a second hand car with 80k miles we wouldn't dream of rebuilding the engine "just in case" but a bike with 30k miles and were replacing shells and god knows what .
I dynoed my 67k mile fireblade and it was making 2bhp more than Honda said it would when new, a friend of mine rebuilt his blades engine at 35k miles, a complete waste of money and time!
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